45197900240 has 20 divisors (see below), whose sum is σ = 105085118244. Its totient is φ = 18079160064.

The previous prime is 45197900213. The next prime is 45197900257. The reversal of 45197900240 is 4200979154.

It can be written as a sum of positive squares in 2 ways, for example, as 15135888784 + 30062011456 = 123028^2 + 173384^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×45197900240² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 282486797 + ... + 282486956.

Almost surely, 2^45197900240 is an apocalyptic number.

45197900240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45197900240 is an abundant number, since it is smaller than the sum of its proper divisors (59887218004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45197900240 is a wasteful number, since it uses less digits than its factorization.

45197900240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564973766 (or 564973760 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 41.

The spelling of 45197900240 in words is "forty-five billion, one hundred ninety-seven million, nine hundred thousand, two hundred forty".